WO2014036581A1

WO2014036581A1 - In situ concrete safety barrier

Info

Publication number: WO2014036581A1
Application number: PCT/AT2013/000149
Authority: WO
Inventors: Alexander Barnas; Thomas Edl
Original assignee: Kirchdorfer Fertigteilholding Gmbh
Priority date: 2012-09-10
Filing date: 2013-09-10
Publication date: 2014-03-13
Also published as: PL2893084T3; DE202013102762U1; ES2643742T3; EP2893084A1; EP2893084B1

Abstract

The invention relates to an in situ concrete safety barrier (1) comprising an in situ concrete body (2). A profile of the in situ concrete body (2) reduces from a base area (3) of the in situ concrete body (2) to a head area (4) of the in situ concrete body (2). According to the invention, said in situ concrete body (2) is provided with an essentially continuous reinforcement (5).

Description

Ortbetonschutzwand

The invention relates to a Ortbetonschutzwand according to the preamble of claim 1.

Ortbetonschutzwände be used as a vehicle restraint system, which are intended to prevent vehicles from accidentally leaving a roadway, and thus to keep the vulnerability of the occupants low. An in-situ concrete protective wall is here a concrete wall, which is manufactured on site. Such Ortbetonschutzwände are usually by means of a

Sliding shell method produced, which can be made in a simple process long continuous in-situ concrete walls.

A disadvantage of such Ortbetonschutzwänden is that at a

Vehicle impact at high speed or at an unfavorable angle, the in-situ concrete protective wall can be broken, or there is too strong deflection of the in-situ concrete protective wall.

The object of the invention is therefore to provide a Ortbetonschutzwand of the type mentioned, with which the mentioned disadvantages can be avoided, and offers better protection of the occupants of an impacting vehicle.

This is achieved by the features of claim 1 according to the invention.

This has the advantage that the Ortbetonschutzwand is better suited to prevent vehicles from accidentally leaving a roadway.

The subclaims relate to further advantageous embodiments of the invention.

It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim. The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:

Fig. 1 shows a first preferred embodiment of an in-situ concrete protection wall in section transversely to the longitudinal extent;

FIG. 2 shows a second preferred embodiment of an in-situ concrete protective wall in a section transverse to the longitudinal extent; FIG. and

Fig. 3 shows a third preferred embodiment of an in-situ concrete protection wall in cross-section to the longitudinal extent.

FIGS. 1 to 3 show preferred embodiments of an in-situ concrete protection wall 1 comprising an in-situ concrete body 2, wherein a profile of the in-situ concrete body 2 extends from a foot region 3 of the in-situ concrete body 2 to a head region 4 of FIG

Ortbetonkörpers 2 tapered towards. An in-situ concrete protective wall 1 may be part of a vehicle restraint system in particular. such

Ortbetonschutzwände 1 are preferably placed next to lanes 16 to prevent uncontrolled Abrren or a deal of a vehicle from the lane 16. For this purpose, in particular the longitudinal extent of

Ortbetonschutzwand 1 be arranged parallel to the longitudinal extent of the adjacent lane 16. An in-situ concrete protective wall 1 has an in-situ concrete body 2, which can be produced, in particular, at the planned site of use.

An in-situ concrete body 2 can in this case in particular by means of a

Gleitschalenverfahren be produced. Furthermore, the in-situ concrete protective wall 1 may in particular have a continuous in-situ concrete body 2. By extending from a foot portion 3 of the Ortbetonkörpers 2 to a head portion 4 of

Ortbetonkörpers 2 towards tapered profile overturning of an impacting vehicle can be prevented. In particular, the profile of the Ortbetonkörpers 2 may be formed as a New Jersey profile, as shown for example in FIGS. 1 and 2. According to an embodiment, not shown, the profile of the Ortbetonkörpers 2 may be formed as a step profile.

The head region 4 can be in particular that region of the in-situ concrete body 2, which is arranged above 80% of the total height of the in-situ concrete body 2.

The foot region 3 may in particular be that region of the in-situ concrete body 2 which is arranged below 20% of the total height of the in-situ concrete body 2.

It is provided that the in-situ concrete body 2 with a substantially

continuous reinforcement 5 is provided. The reinforcement 5 can absorb the tensile forces occurring in the event of a collision of a vehicle and thus prevent the vehicle from breaking through. The reinforcement 5 may in particular comprise one or more reinforcing strands, which may be formed, for example, as steel wires, strands, ropes and / or as reinforcing bars, substantially continuous in this sense means that the reinforcement 5 need not necessarily consist of continuous reinforcing strands, but that also several, especially in the longitudinal direction overlapping

Reinforcement elements, or longitudinally with welds or

Coupling constructions pushed reinforcing elements, can be provided.

According to a particularly preferred development it can be provided that at least one first reinforcing strand 6 of the reinforcement 5 is arranged in the foot region 3 of the in-situ concrete body 2, and that a horizontal distance of the first reinforcing strand 6 to an opposite outer edge of the

Ortbetonkörpers 2 is at least 70% of the maximum width of the Ortbetonkörpers 2 in the foot area 3. The first reinforcing strand 6 may be formed, for example, from a continuous reinforcing element, or from a plurality of following in the longitudinal direction and in particular partially intersecting reinforcing elements. Due to the arrangement of the first reinforcing strand 6 of the reinforcement 5 in the broader foot region 3 of the Ortbetonkörpers 2 this can be arranged horizontally spaced further to the center of the in-situ concrete body as in the narrower head area 4 of Ortbetonkörpers 2. The outer edge of the

Ortbetonkörpers 2 can in this case of a running through the center of the Ortbetonkörpers 2 vertical plane at the farthest edge of the

Ortbetonkörpers be 2. The maximum width of the in-situ concrete body 2 is in this case the maximum horizontal extent of the in-situ concrete body 2 in the foot region transverse to the longitudinal extent of the in-situ concrete body 2 a load of a vehicle occurring loads absorb better, thereby breaking the vehicle or too far lateral deflection of the Ortbetonwand 1 can be prevented, whereby also required for the deflection space Ortbetonwand 1 can be kept low.

Furthermore, it can be provided that the horizontal distance of the first

Reinforcing line 6 to the opposite outer edge of the Ortbetonkörpers 2 at least 75%, in particular 80%, more preferably 85%, the maximum width of the Ortbetonkörpers 2 in the foot region 3.

According to an embodiment, not shown, it can be provided that only a first reinforcing strand 6 is arranged in the foot region. This first reinforcing strand 6 may in particular be arranged closer to a side of the in-situ concrete protection wall 1 facing away from the roadway.

Furthermore, it can be provided that in the foot area at least a second

Reinforcement 7 of the reinforcement 5 horizontally spaced from the first

Reinforcement 6 is arranged.

Particularly preferably, it can be provided that the at least one second

Reinforcement 7 of the reinforcement 5 in the foot region 3 of the Ortbetonkörpers 2 is arranged, and that a horizontal distance between the first

Reinforcing 6 and the second reinforcing strand 7 is at least 50% of the maximum width of the in-situ concrete body 2 in the foot area 3, in particular, the horizontal distance between the first reinforcing strand 6 and the second reinforcing strand 7 at least 60%, more preferably at least 70%, the maximum width of the in-situ concrete body 2 in the foot region 3. In this case, a particularly good absorption of the loads in case of impact by the reinforcement 5 can be achieved.

Preferably, it can be provided that in the head region 4 of the Ortbetonkörpers 2 more reinforcing strands are arranged centrally. An embodiment formed in this way is shown by way of example in FIG.

Furthermore, it can be provided that at least a third reinforcing strand 8 and a fourth reinforcing strand 9 of the reinforcement 5 horizontally from each other spaced apart in the head region 4 of the Ortbetonkörpers 2 are arranged. In this case, provision may in particular be made for a horizontal distance between the third reinforcing strand 8 and the fourth reinforcing strand 9 to be at least 50% of the width of the head region 4 of the in-situ concrete body 2. The width of the

Head area 4 of the in-situ concrete body 2 may be the width of the in-situ concrete body 2 at its upper edge. In this case, the effect of the reinforcement can also be reinforced in the head area 4 in comparison to a centrally arranged reinforcement. An embodiment formed in this way is shown by way of example in FIG. 2.

Furthermore, it may be provided that a width of the head region 4 is between 25% and 40% of a width of the foot region 3. In particular, the width of the head region 4 can amount to substantially 30% of the width of the foot region 3. The width of the head region 4 can be measured at an upper edge of the in-situ concrete body 2, while the width of the foot region 3 can be the maximum width of the in-situ concrete body 2 in the foot region 3.

Preferably, it can further be provided that the reinforcement 5 comprises galvanized steel seats. In this case, in particular, the first reinforcing strand 6, the second reinforcing strand 7, the third reinforcing strand 8 and / or the fourth

Reinforcing 9 be designed as galvanized steel strand. As a result, the reinforcement 5 can be arranged closer to the surface of the in-situ concrete body 2, since the reinforcement 5 is resistant to external environmental influences.

According to a further preferred refinement, provision can be made in particular for at least one groove 10 on a surface of the in-situ concrete body 2 to extend essentially normal to the longitudinal extent of the in-situ concrete protection wall 1, and for a depth of the groove 10 to vary along the course of the groove 10. The at least one groove 10 serves to prevent uncontrolled cracking and crack propagation on the surface 3 of the in-situ concrete body 2 during curing of the in-situ concrete body 2 and under temperature stress. Furthermore, the groove 4 can ensure that the in-situ concrete body 2 breaks in a collision of a vehicle at a predetermined location. The depth of the groove 4 can be considered in particular normal to the adjacent surface of the in-situ concrete body 2. It has been shown that to achieve a predetermined breaking point and / or Crack point of the Ortbetonkörpers 2 at the groove 4, it is sufficient to weaken the cross section of the Ortbetonkörpers by a predetermined proportion. By over the course of the groove 10, that is, along the direction over which the groove extends, varying depth of the groove 10 of the Ortbetonkörper 2 can be weakened at predeterminable areas, and in turn to other imaginable areas of a

Weakening. Furthermore, it can be provided that the

Variation of the depth of the groove 10 is flowing, that is free of steps.

In the variation of the depth of the groove 10 may be provided in particular that the groove 10 has at least a first region and at least a second region, and that the groove in the first region is at least 50% lower than in the second region.

In particular, it can be provided that the cross section of the in-situ concrete body 2 in the groove is weakened by 10% to 30%. It can be provided that the at least one groove 4 in Ortbetonkörper 2 a core cross-section transverse to

Longitudinal extent of the in-situ concrete protection wall 1 limited, and that the

Core cross section 70% to 90% of the area of the cross section of an adjacent to the groove 10 portion of the Ortbetonkörpers.

FIGS. 1 to 3 are sections which run through the groove 4. The area of the core cross-section is hatched here.

The in-situ concrete body 2 may in particular have a plurality of grooves 4, which are arranged at regular intervals from one another.

In particular, it can be provided that the groove 10 is formed deeper in the foot region 3 than in the head region 4. Here, by the variable depth of at least one groove 4, which is deeper in the foot region 3 than in the head area 4, concrete chipping in the head area 4 better avoided in that the head region 4 is weakened less, it also being possible to ensure that the in-situ concrete body 1 breaks at the location of the groove 4. Such a trained

Embodiment is exemplified in Fig. 2.

Particularly preferably, it can be provided that the groove 10 in the foot region 3 is at least 50% lower than in the head region 4. As a result, the reinforcement 5 in the Head area 4 are arranged with a large horizontal distance from each other.

Furthermore, it can be provided that the first region of the groove 10 is arranged in the foot region 3, and that the second region of the groove 10 in the head region 4

is arranged.

Alternatively it can be provided that the groove 4 is essentially a

having constant depth. An embodiment formed in this way is shown by way of example in FIG.

Furthermore, it can be provided that the groove 10 is formed deeper in an unreinforced area of the in-situ concrete body 2 than in a reinforcement 5

As a result, the reinforcement 5 can be arranged closer to the edge of the Ortbetonkörpers 2, wherein furthermore a reliable cover is present. The unreinforced region of the in-situ concrete body 2 is in this case that region of the in-situ concrete body 2, which is not adjacent to the reinforcement 5. It can be provided that the groove in a, an unreinforced area of the in-situ concrete body 2 performing, middle region of the

In-situ concrete body 2 is formed deeper than in the foot region 3 or in the head region 4, in which a reinforcement 5 is arranged. Such a trained

Embodiment is exemplified in Fig. 3.

In particular, it can be provided that the groove 10 is at least 50% lower in the unreinforced region of the in-situ concrete body 2 than in the region of the in-situ concrete body 2 adjacent to the reinforcement 5.

In this case, it may be provided, in particular, that the second region of the groove 10 is arranged adjacent to the reinforcement 5. In this case, in particular, the first region of the groove 10 in an unreinforced region of the Ortbetonkörpers second

be arranged.

In particular, it can be provided that the depth of the groove 10 is smaller in an area adjacent to the reinforcement 5 than in an unreinforced area of the in-situ concrete body 2. This allows the reinforcement 5 closer to the edge of the

In situ concrete body 2 may be arranged, wherein furthermore a reliable cover is available. It can be provided that the groove is formed deeper in a central region of the in-situ concrete body 2 than in the foot region 3 or in the head region 4.

In particular, it may be provided that the depth of the groove 10 in which to the

Reinforcement 5 adjacent area is at least 50% less than in the unreinforced area of Ortbetonkörpers. 2

According to a further preferred refinement, provision can be made, in particular, for a bottom 11 of the in-situ concrete body 2 to have a step 12 on at least one side, and for the step 12 to extend parallel to a longitudinal extent of the in-situ concrete protective wall 1 and on a side wall 13 of the

Ortbetonkörpers 2 adjacent recess forms. As a result, lateral deflection of the in-situ concrete protective wall 1 in the event of a colliding vehicle can be reduced, since the tilting movement occurring when the vehicle collides

Ortbetonschutzwand 1 the material in the recess by the vertical pressure is more viable and thereby better counteracts a lateral deflection of the in-situ concrete protection wall 1 at the level 12. An embodiment formed in this way is shown by way of example in FIG.

Here, the in-situ concrete protection wall 1 can be arranged in particular in a longitudinal groove 17 on a roadway surface layer 18 of the traffic route. The

Road surface layer 18 may be, for example, asphalt. The longitudinal groove 17 preferably runs parallel to the longitudinal extent of the in-situ concrete protective wall 1.

It can be provided in particular that the bottom 11 of the

Site concrete body 2 has a step 12 on both sides. As a result, the in-situ concrete protective wall can be easily formed on a longitudinal groove 17 of the roadway top layer 18.

In particular, when the in-situ concrete protective wall 1 is arranged at an edge of a traffic route in a longitudinal groove 17, is on a side facing away from the roadway 16 of the in-situ concrete protection wall 1 usually a cover layer overhang 19th

arranged. In this case, a width of the outer layer overhang 19 of 0.5 m to 1 m is usually necessary in order to prevent excessive lateral deflection of the Ortbetonschutzwand to prevent 1, provided the entire bottom 11 of the

Ortbetonschutzwand 1 in the longitudinal groove 17 is arranged. Due to the formation of the step 12 on the underside of the Ortbetonkörpers 2 is a at the stage 12th

abutting part of the in-situ concrete body 2 is arranged outside the longitudinal groove 17 and rests on the adjacent to the longitudinal groove 17 part of the road surface 18. An impact of a vehicle here generates a tilting movement at the stage 12, whereby by the adjoining the step 12 part of the Ortbetonkörpers 2 the compressed on the longitudinal groove 17 adjacent part of the road surface layer 18 and thereby makes it more viable against horizontal forces. As a result, it is advantageously possible to use a cover layer overhang 19 of only 0.1 m to 0.2 m in order to prevent excessive lateral deflection of the in-situ concrete protective wall 1. Due to the smaller necessary width of the outer layer overhang 19, the space requirement and the effort to establish the traffic route can be reduced.

Particularly preferably, it can be provided that the step 12 a at the

Side wall 13 has adjacent horizontal surface 14 and a horizontal surface 14 adjacent to the vertical surface 15, and that a width of the

Vertical surface 15 is 25% to 100% of a width of the horizontal surface 14. The horizontal surface 14 may in this case in particular orthogonal to the vertical surface 15 see. In the event of a collision of a vehicle, in the case of the tilting movement on the step 12, a planar force action occurs in the horizontal surface 14 on the roadway covering layer 18 adjoining the longitudinal groove 17, while the

Vertical surface 15 a lateral pressure exerts this area of the road surface 18. It has been shown that at this ratio of the

Horizontal surface 14 to the vertical surface 15 a particularly good effect can be achieved.

Alternatively it can be provided that the in-situ concrete body 2 has a substantially flat underside 11. Such trained preferred

Embodiment is exemplified in Fig. 2.

Claims

PATENT APPLICATIONS

1. Ortbetonschutzwand (1) comprising an in-situ concrete body (2), wherein a profile of the Ortbetonkörpers (2) of a foot region (3) of the Ortbetonkörpers

(2) tapers towards a head region (4) of the Ortbetonkörpers (2), characterized in that the Ortbetonkörper (2) with a substantially

continuous reinforcement (5) is provided.

2. Ortbetonschutzwand (1) according to claim 1, characterized in that at least one first reinforcing strand (6) of the reinforcement (5) in the foot area

(3) of the Ortbetonkörpers (2) is arranged, and that a horizontal distance of the first reinforcing strand (6) to an opposite outer edge of the Ortbetonkörpers (2) is at least 70% of the maximum width of the Ortbetonkörpers (2) in the foot region (3).

3. Ortbetonschutzwand (1) according to claim 2, characterized in that at least one second reinforcing strand (7) of the reinforcement (5) in the foot region (3) of the Ortbetonkörpers (2) is arranged, and that a horizontal distance between the first reinforcing strand (6 ) and the second reinforcing strand (7) is at least 50% of the maximum width of the in-situ concrete body (2) in the foot region (3).

4. Ortbetonschutzwand (1) according to one of claims 1 to 3, characterized in that at least one third reinforcing strand (8) and a fourth reinforcing strand (9) of the reinforcement (5) horizontally spaced from each other in the head region (4) of the Ortbetonkörpers (2) are arranged.

5. Ortbetonschutzwand (1) according to one of claims 1 to 4, characterized in that a width of the head region (4) between 25% and 40% of a width of the foot region (3).

6. Ortbetonschutzwand (1) according to one of claims 1 to 5, characterized in that the reinforcement (5) comprises galvanized steel strands.

7. Ortbetonschutzwand (1) according to one of claims 1 to 6, characterized in that on a surface of the Ortbetonkörpers (2) at least one groove (10) substantially normal to the longitudinal extension of the Ortbetonschutzwand (1), and that a depth of the groove (10) along the course of the groove (10) varies.

8. Ortbetonschutzwand (1) according to claim 7, characterized in that the groove (10) in the foot region (3) is formed deeper than in the head region (4).

9. Ortbetonschutzwand (1) according to claim 7 or 8, characterized

characterized in that the groove (10) in the foot region (3) is at least 50% lower than in the head region (4).

10. Ortbetonschutzwand (1) according to claim 7, characterized in that the groove (10) in an unreinforced region of the Ortbetonkörpers (2) is formed deeper than in a to the reinforcement (5) adjacent region of the

Ortbetonkörpers (2).

11. Ortbetonschutzwand (1) according to claim 10, characterized in that the groove (10) in the unreinforced region of the in-situ concrete body (2) is at least 50% deeper than in the reinforcement (5) adjacent region of

In-situ concrete body (2).

12. Ortbetonschutzwand (1) according to one of claims 1 to 11, characterized in that a bottom (11) of the Ortbetonkörpers (2) on at least one side of a step (12), and that the step (12) parallel to a Longitudinal extent of the in-situ concrete protective wall (1) extending and on a side wall (13) of the Ortbetonkörpers (2) adjacent recess forms.

13. Ortbetonschutzwand (1) according to claim 12, characterized in that the underside (11) of the in-situ concrete body (2) on both sides of a step (12).

14. Ortbetonschutzwand (1) according to claim 12 or 13, characterized

characterized in that the step (12) has a horizontal surface (14) adjacent to the side wall (13) and a vertical surface (15) adjacent to the horizontal surface (14), and a width of the vertical surface (15) is 25% to 100% Width of the horizontal surface (14) is.